Fix review issue: another -> a different

Author: hedrok

book/10-git-internals/sections/objects.asc

@@ -242,7 +242,7 @@ $ echo 'first commit' | git commit-tree d8329f
 fdf4fc3344e67ab068f836878b6c4951e3b15f3d
 ----
 
-You will get another hash value because of different creation time and author data.
+You will get a different hash value because of different creation time and author data.
 Replace commit and tag hashes with your own checksums further in this chapter.
 Now you can look at your new commit object with `cat-file`: